Feeding device for liquids.



PATENTED DEC. 12, 1905.

M. B. ROSENSTIOGK. FEEDING DEVICE FOR LIQUIDS.

APPLICATION FILED 1113611905.

UNITED STATES PATENT OFFICE.

MORRIS B. ROSENSTOCK, OF PHILADELPHIA, PENNSYLVANIA.

FEEDING DEVICE FOR LIQUIDS.

To all whom it may concern:

Be it known that I, MORRIS B. RosEN- STOCK, of the city and county of Philadelphia,

and State of Pennsylvania, have invented an Improvement in Feeding Devices for Liquids, of which the following is a specification.

My invention has reference to means for controlling the flow of liquids; and it consists of certain improvements which are fully set forth in the following specification and shown in the accompanying drawings, which form a part thereof.

The object of my invention is to provide means for regulating the flow of liquids from a reservoir in which the rate of flow may be maintained substantially uniform irrespective of the variations in pressure due to the varying height or head of li uid within the tank and above the outlet or ischarge valve.

My invention is adapted for general use where regulated and uniform supply of liquid is required, but has special application in apparatus for dispensing germicide or disinfecting fluids in which it is desired to cause the said fluids to discharge drop by drop at regular intervals.

My invention comprehends a vessel or tank for holding the fluid, combined with a regulating-valve of suitable construction, a rotatable shaft to operate the valve, and a float adapted to rise and fall with the level of the liquid to impart a rotary movement to the shaft.

My invention also embodies details of construction which, together with the abovespecified features, will be better understood by reference to the drawings, in which- Figure 1 is a sectional elevation of my improved apparatus for regulating the discharge of liquids. Fig. 2 is a cross-section of same on line 2 2 of Fig. 1, and Fig. 3 is a sectional elevation of a modified construction embodying my improvements.

A is a liquid tank or vessel and is provided with a discharge-nozzle B at the bottom. Working in this nozzle is a screw-plug C, adapted to loosely fit the screw-threads on the inside of the nozzle. This plug 0 is secured to or formed u on the lower end of the upright shaft D, whic is made in spiral form. The upper end of this shaft D is j ournaled at the top at E in a cross-frame on the vessel A. By rotating the shaft D the plug is screwed into or out of the nozzle and in that manner increases or decreases the resistance to the flow of the liquid through the nozzle. By

Specification of Letters Patent.

Application filed February 6,1905. Serial No. 244,303.

Patented Dec. 12, 1905.

the screwing in or out of the plug C the length of the passage-way for the flow of the fluid is correspondingly lengthened or shortened, so that a greater or less resistance to the flow of the liquid is produced proportional to the varying height of the liquid in the vessel A.

The shaft D is rotated by a float G, which is sustained by the liquid and descends with a speed commensurate with the lowering of the level of the liquid due to its discharge from the nozzle. The float G has guide slots or grooves H, into which the shaft fits and by which a sliding connection is formed adapted to rotate the shaft as the float descends. The float G is prevented from rotating by guides I in the sides of the vessel, which flt the grooves J in the float G, so that while the float is caused to descend without rotating the spiral shaft is made to rotate to unscrew the plug partly out of the nozzle.

The vessel may be provided with a cover or cap E to seal the contents against dust and dirt.

While I have set out in the above description a structure excellently adapted to the purposes of my invention, I do not restrict myself to the details thereof.

- When the vessel is full of liquid, there is the greatest pressure to force the flow through the nozzle, and as the level is lowered this pressure becomes gradually less, and consequently there is correspondingly less pressure to force the discharge of the liquid through the capillary passage formed by the threads of the screw-plug and nozzle. The descent of the float, however, rotates the screw-plug and gradually withdraws more or less of it, and thereby reduces to the proper degree the resistance to the flow of the liquid. In this manner the flow may be maintained constant even to the regularity of successive drops, such as is required in germicide a paratus.

In place of having the shaft D in spiral form it may be made straight, as at D in Fig. 3, and the guides I on the vessel may be spiral, so as to cause the float G to rotate as it descends. In this manner the screw-plug may be rotated with the same result as that of Figs. 1 and 2. It will, however, be advisable in this case to have the pitch of the IIO gradually reduce the resistance to the flow of liquid to compensate for the diiference in the level and pressure of the liquid whereby the 1. Means for controlling the flow of liquids consisting of a vessel .to contain the liquid having a discharge-nozzle, combined with means to vary the orifice of the nozzle through which the liquid flows, a rotating shaft to operate the said means, and a float sustained by the liquid within the vessel for rotating the shaft upon its descent, whereby as the float descends the orifice through which the liquid flows will be changed to reduce the friction in opposition to the flow of the liquid whereby the flow is made substantially constant.

2. Means for controlling the flow of liquids consisting of a vessel to contain the liquid having a nozzle, a valve to regulate the flow of li uid from the nozzle, a float within the vesse supported by the liquid therein, and continuously-acting connecting means between the float and the valve whereby the gree of resistance to the flow of the li uid,

and a float supported by the liquid within the vessel for rotating the shaft.

4. Means for controlling the flow of liquids consisting of a vessel to contain the liquid provided with a dischargenozzle,combined with a screw-plug loosely fitting the nozzle so as to permit the slow passage of liquid, a spiral shaft to rotate the screw-plug to vary the degree of resistance to the flow of the liquid, and a float supported by the liquid wlthin the vessel for rotatin the shaft as it descends with the lowering of the level of the liquid.

In testimony of which invention I hereunto set my hand.

MORRIS B. ROSENSTOCK.

WVitnesses:

R. M. HUNTER, R. M. KELLY. 

